MLA Citation: Bloomfield, Louis A. "Question 1335"
How Everything Works 18 Feb 2018. 18 Feb 2018 <http://howeverythingworks.org/print1.php?QNum=1335>.
1335. When a rubber ball bounces or rebounds, does the weight of the ball determine how many times it bounces?
Each time the ball bounces, it rises to a height that is a certain fraction of its height before that bounce. The ratio of these two heights is the fraction of the ball's energy that is stored and returned during the bounce. A very elastic ball will return about 90% of its energy after a bounce, returning to 90% of its original height after a bounce. A relatively non-elastic ball may only return about 20% of its energy and bounce to only 20% of its original height. It is this energy efficiency that determines how many times a ball bounces. The missing energy is usually converted into thermal energy within the ball's internal structure.

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